Have you ever examined a circuit board and wondered what a particular component is? Whether you're learning electronics, repairing a device, or just curious about how a PCB works, being able to quickly identify components is the essential first step. Here I wanted to share a free, web…
Have you ever examined a circuit board and wondered what a particular component is? Whether you're learning electronics, repairing a device, or just curious about how a PCB works, being able to quickly identify components is the essential first …
In the morning I was looking into AI implementation on microcontrollers and what languages and tools I had to learn. I came across the Tensorflow Lite for microcontrollers. Then I started to learn more about tensorf…
After long time I needed to reprogram my ESP8266 NodeMCU. Looking back into my older blogpost I came to know that I have not written any note on how I programmed it when I used it for the first time. So this time I wanted to write a note on how I a…
I came across old post about phase shifting circuit . It immediately brought back to my engineering study in communication system. In the book there I/Q modulators were shown as a simple box, I mean no circuit schematic and how to built those modul…
Here I want to share a Low Power Audio Amplifier circuit built with LM386 IC which you can connect to a PC or mobile phone using 3.5mm headphone jack. The low power LM386 audio amplifier was tested on breadboard. Circuit Diagram/Schematic If you wa…
Previously PIR based alram circuit was demonstrated. Here a simple IR sensor-based alarm system built using an IR sensor module, two BC547 NPN transistors, a 1 kilo-ohm resistor, and an active buzzer is illustrated. The IR sensor module is powered …
I saw a circuit that showed how simple it is to make PIR based alarm system. I build and tested Arduino and PIR based alert system but not without Arduino. So this PIR alarm circuit does not need any microcontroller like Arduino. The circuit diag…
This alarm system utilizes a PIR sensor (Passive Infrared) to detect motion and a 2N2222 NPN transistor to drive an active buzzer. The 7.4V Li-ion battery provides power to both the sensor and the load. 1. Circuit Components • PIR S…
Recently, I had the opportunity to assemble and drive my very first Arduino-powered Bluetooth-controlled RC car. Creating my own wireless RC car has been a personal goal for a long time. I’ve written multiple tutorials covering the core technologies…
